KR20140126438A - Hybrid radiationg pipe and Heatsink module - Google Patents

Hybrid radiationg pipe and Heatsink module Download PDF

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Publication number
KR20140126438A
KR20140126438A KR20130044551A KR20130044551A KR20140126438A KR 20140126438 A KR20140126438 A KR 20140126438A KR 20130044551 A KR20130044551 A KR 20130044551A KR 20130044551 A KR20130044551 A KR 20130044551A KR 20140126438 A KR20140126438 A KR 20140126438A
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KR
South Korea
Prior art keywords
heat
pipe
heat transfer
hybrid
heat radiation
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Application number
KR20130044551A
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Korean (ko)
Inventor
전창균
Original Assignee
주식회사 그린와이드
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Priority to KR20130044551A priority Critical patent/KR20140126438A/en
Publication of KR20140126438A publication Critical patent/KR20140126438A/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/51—Cooling arrangements using condensation or evaporation of a fluid, e.g. heat pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • F21V29/77—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical diverging planar fins or blades, e.g. with fan-like or star-like cross-section
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)

Abstract

The present invention relates to a hybrid heat radiation pipe and a heat radiation module using the same and, more particularly, to a hybrid heat radiation pipe including a heat transmission rod of a preset length formed in a cylindrical body, wherein the body is empty inside to receive operating fluid and is open at both ends to be combined with lids, in order to quickly transmit heat generated from a substrate to the operating fluid and accordingly promote the evaporation of the operating fluid, thereby improving heat transmission efficiency. One end of the heat transmission rod is integrated with the lid which is combined with one end of the body. Also, the heat radiation module using the hybrid heat radiation pipe includes the heat radiation pipe and a heat radiation member having a heat radiation fin formed around the outer circumference of a pipe-shaped body into which the heat radiation pipe is fitted.

Description

TECHNICAL FIELD [0001] The present invention relates to a hybrid radiating pipe and a radiating module using the same,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hybrid heat-radiating pipe and a heat-dissipating module using the hybrid heat-radiating pipe, and more particularly, to a hybrid heat-radiating pipe having a heat-

In general, LED (Light Emitting Diode) is a type of semiconductor. When a voltage is applied, electric energy is changed into light energy to emit light. The light using such LED is low in electricity consumption, It can be easily implemented in color and has many advantages. As a result, it is getting popular as a future light source as environment friendly technology.

However, since the illumination using the LED generates considerable heat, it is necessary to dissipate the generated heat quickly and efficiently. Heat dissipation performance in LED lighting is directly related to product life, and various heat dissipation technologies are being developed.

Such heat dissipation technology has LED illumination using a metal base substrate, but it is difficult to sufficiently secure heat dissipation, and LED lighting using an aluminum nitride (AIN) plate having a high thermal conductivity has a problem of high manufacturing cost.

Accordingly, in order to solve such a problem, a heat-radiating pipe has been used for LED lighting, and such a heat-radiating pipe has been proposed in Japanese Patent Application Laid-Open No. 10-2006-0033624 (hereinafter referred to as "cited invention"). 1, both ends of the pipe 10 are sealed by plugs 60 and 62, and a metal powder 32 is sintered on the inner surface of the pipe 10, And the movement of the working fluid accommodated in the sintered wick is further improved.

However, in order to facilitate the movement of the working fluid by the capillary phenomenon as described above, the thickness of the sintered wick must be thinned and uniformly formed. In order to form the sintered wick, the manufacturing process is complicated, There is a possibility that the heat transfer efficiency may be decreased depending on the temperature and the like.

In addition, in order to couple the heat radiating pipe of the cited invention with the substrate on which the LED is mounted, a separate adhesive or the like must be used, so that the heat generated from the substrate can not be completely transferred to the heat radiating pipe, have.

Particularly, the working fluid contained in the pipe 10 is generally injected so as to occupy 15 to 30% of the internal volume of the pipe 10. When a heat-radiating pipe is coupled to the rear surface of the substrate on which the LED is mounted and the lamp is illuminated upward Since the working fluid is accommodated in the lower portion of the heat-radiating pipe, which is the opposite side of the substrate on which the heat source is located, vaporization is not performed in a short time and the heat radiation efficiency is lowered.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems and it is an object of the present invention to provide a hybrid heat pipe having improved heat transfer efficiency by rapidly transferring heat generated from a substrate to a working fluid to promote vaporization of the working fluid, have.

In order to accomplish the above object, the hybrid heat radiating pipe of the present invention includes a thermally conductive bar having a predetermined length, the thermally-insulated pipe including a hollow cylindrical body to which a hollow working fluid is accommodated and both ends thereof are opened, Is integrally formed with a cover coupled to one end of the body.

In order to achieve the above object, a heat dissipation module using the hybrid heat dissipation pipe according to the present invention includes the heat dissipation pipe and a heat dissipation member formed with a heat dissipation fin along an outer circumferential surface of a pipe-like body in which the heat dissipation pipe is inserted .

The heat radiating pipe according to the present invention is provided with a heat conducting rod inside the body and one end of the heat transferring rod is integrally formed with the lid abutted against the substrate on which the LED is mounted so that heat generated from the substrate is rapidly transferred to the working fluid along the heat transfer rod, The vaporization of the working fluid is promoted and the heat transfer efficiency is improved.

In addition, since the heat transfer rod has a function of transmitting heat and facilitating the movement of the working fluid, there is no need to form a sintered wick on the inner side of the body, which is advantageous in that the manufacturing process is simple.

On the other hand, by constructing the heat dissipation module using the heat dissipation pipe, the heat transfer from the heat dissipation pipe to the heat dissipation fin is rapidly performed, and the heat dissipation efficiency is improved.

1 is a cross-sectional view showing a structure of a conventional heat radiating pipe,
2 is an exploded perspective view showing a structure of a hybrid heat-radiating pipe according to the present invention,
3 is a cross-sectional view showing a structure of a hybrid heat-radiating pipe according to the present invention,
4A and 4B are views showing another example of a heat transfer rod applied to a hybrid heat radiating pipe according to the present invention,
FIG. 5 is an exemplary view showing a structure in which an auxiliary heat transfer rod is coupled to a heat transfer rod applied to a hybrid heat radiation pipe according to the present invention. FIG.
6 is a cross-sectional view showing an example of a structure in which an auxiliary heat transfer portion is disposed in a hybrid heat radiation pipe according to the present invention,
7 is an exemplary view showing various forms of the auxiliary heat transfer part applied to the hybrid heat radiation pipe according to the present invention,
FIG. 8 is an exemplary view showing a state in which the hybrid heat-radiating pipe according to the present invention is coupled to a support plate and a heat-
9 to 11 are views showing a state in which the hybrid heat radiating pipe according to the present invention is combined with a substrate, a support plate, and a heat dissipating member.

In the present invention, in order to improve heat transfer efficiency by rapidly transferring heat generated from a substrate to a working fluid to promote vaporization of the working fluid, a tubular body having an inner hollow working fluid accommodated therein, And a heat transferring bar having a predetermined length, wherein one end of the heat transferring bar is integrally formed with a cover coupled to one end of the body.

The present invention also provides a heat dissipation module using the hybrid heat dissipation pipe, wherein the heat dissipation pipe and the heat dissipation member having the heat dissipation fin are formed along the outer circumferential surface of the pipe-like body in which the heat dissipation pipe is inserted.

The scope of the present invention is not limited to the embodiments described below, and various modifications may be made by those skilled in the art without departing from the technical scope of the present invention.

Hereinafter, the hybrid heat-radiating pipe and the heat-radiating module using the same according to the present invention will be described in detail with reference to FIGS. 2 to 11.

As shown in FIGS. 2 and 3, the hybrid heat-radiating pipe according to the present invention includes a tubular body 100 having a hollow inside and a cover 110 coupled to each other, And a heat transfer bar 120 having a predetermined length formed integrally with the lid 110 of the heat exchanger.

Hereinafter, the upper end of the body 100 refers to a portion where one end 110 of the thermo-turn-off bar 120 is integrally formed, and the lower end of the body 100 corresponds to a portion where the opposite end 110 is located. .

The body 100 may be formed in various shapes, but the following description will be made assuming that the body 100 is cylindrical as shown in FIG. Both ends of the body 100 are opened and the lid 110 is coupled to both ends of the body 100 to seal the body 100. At this time, a through hole may be formed in the cover 110, and the air inside the body 100 may be sucked into the vacuum state through the through hole, and then the through hole may be welded to seal the body 100.

Meanwhile, the material of the body 100 is preferably formed of a material having a high thermal conductivity. In general, copper (Cu) is mainly used, but the present invention is not limited thereto. For example, copper has a thermal conductivity of 300 to 340 ㎉ / ºC, aluminum (Al) has a thermal conductivity of about 175 ㎉ / ºC, and copper is twice as effective as aluminum. On the other hand, aluminum is lighter than copper, has a lower recycling cost, and is less likely to generate environmentally harmful substances at the time of production, and is currently used in automobiles and industrial applications.

As shown in FIG. 3, a working fluid 10 for absorbing heat generated from a substrate, a machine, and the like and moving heat from a high temperature portion to a low temperature portion is accommodated in the body 100, Of the internal volume of the body 100 is 10 to 30% of the internal volume of the body 100. Also, the working fluid 10 is preferably made of a material having a low boiling point, but is not limited thereto, and a gas or a solid may be used.

When a liquid is used as the working fluid 10, mainly ethyl alcohol is used. However, it is not limited thereto, and various kinds of materials can be used as long as the liquid has a low boiling point. In the present invention, it is assumed that the working fluid 10 is a liquid. However, when a suitable working fluid 10 is selected in consideration of the characteristics of the apparatus in which the hybrid heat-radiating pipe is installed and the calorific value of the peripheral device, desirable.

When the hybrid heat radiating pipe A according to the present invention is coupled with the substrate 20, the body 100 is heated by the heat generated from the substrate 20, and the working fluid 10 contained therein is heated It will evaporate. Therefore, when the heat radiating member B is coupled to the heat radiating pipe A, the operating fluid 10 rises to the upper end of the body 100 to transmit heat to the heat radiating member B, B, the liquefied fluid is returned to the lower end of the body 100.

2 and 3, the heat transfer bar 120 may be formed in a rod shape integrally formed with a lid 110 coupled to one end of the body 100 and having a predetermined length, but not limited thereto, (Cu) as well as the substrate 100, but is not limited thereto. On the other hand, the opposite end of the other end of the heat transfer rod 120, that is, the portion formed integrally with the lid 100, is in contact with the working fluid 10 as shown in FIG. Accordingly, the heat transfer rod 120 rapidly transfers the heat received through the cover 110 to the working fluid 10. [0035] For this, a cover 110, which is integrally formed with the thermally conductive bar 120, is coupled to the rear surface of the substrate 20 as a heat source.

For example, when the substrate 20 is coupled to the hybrid heat dissipation module A according to the present invention to illuminate downward, the working fluid 10, which is contained in the body 100, The heat generated from the substrate 20 is easily transferred to the working fluid 10 and vaporized in a short period of time.

In the case where the substrate 20 is coupled to the hybrid heat dissipation module A according to the present invention to illuminate the upward direction, the working fluid 10, which is contained in the body 100, (100). The present invention is characterized in that the heat transferring bar 120 is formed integrally with the lid 100 directly contacting the substrate 20 and the other end of the heat transferring bar 120 is in contact with the working fluid 10, The working fluid 10 is vaporized in a short time.

4A, the lower end may be formed in a circular shape as shown in FIG. 4B. As a result, the thermo transfer rod 120 may be formed as a working fluid The contact area between the heat transfer rod 120 and the working fluid 10 can be increased and the vaporization can be performed more efficiently because the contact area of the heat transfer rod 120 and the working fluid 10 can be increased regardless of the inclination of the body 10 in any direction. However, since the weight of the hybrid heat-radiating pipe A is increased, the characteristics of the device to be combined with the hybrid heat-radiating pipe A must be considered.

Meanwhile, the heat transfer rod 120 serves as a path through which the liquefied working fluid 10 moves. The vaporized working fluid 10 absorbs the heat and moves to the upper end of the body 100 and transfers heat to the heat dissipating member B and then is liquefied and moves to the lower end of the body 100. At this time, (10) can move downward along the heat transfer rod (120). Accordingly, the operation fluid 10 can be smoothly moved and the manufacturing process can be simplified without forming the sintered wick on the inner surface of the body 100.

An example of a manufacturing process of the hybrid heat radiating pipe A including the heat transferring bar 120 and the lid 110 is as follows. A heat transfer bar 120 is integrally formed at one end of a tubular body 100, And then the working fluid 10 is injected into the body 100. In this case, Thereafter, the lid 110 is welded to the other end of the body 100, and the inside of the body 100 is sealed in a vacuum state, thereby manufacturing the hybrid heat radiating pipe A of the present invention.

As shown in FIGS. 5 and 6, the heat transferring bar 120 may be formed with an auxiliary heat transfer part 130 along an outer circumferential surface thereof. The auxiliary heat transferring part 130 may be provided inside the body 100, Even if it is tilted in the direction of the arrow. The auxiliary heat transfer part 130 may be formed in various shapes such as a rod shape or a plate shape, and may be installed in various directions with respect to the body 100.

The auxiliary heat transfer part 130 may be formed at various positions on the outer circumferential surface of the heat transfer bar 120. Even if the body 100 is inclined horizontally, So that the working fluid 10 is rapidly heated. This is because the working fluid 10 occupies 10 to 30% of the internal volume of the body 100 when the body 10 is tilted horizontally and is not in contact with the heat transfer bar 120, So as to prevent the vaporization of the fluid 10 from occurring quickly.

5 and 6, when the auxiliary heat transfer part 130 is formed at the lower end of the body 100, the working fluid 10 is raised in a state where the body 100 is raised for upward illumination, The working fluid 10 is more effectively vaporized because of the contact with the auxiliary heat transfer part 130 including the heat transfer bar 120. Even when the body 100 is horizontally inclined for horizontal illumination, (130) is in contact with the working fluid (10).

7A to 7D, when the auxiliary heat transfer part 130 is formed in the shape of a rod, a plurality of the auxiliary heat transfer parts 130 may be formed on the outer peripheral surface of the heat transfer bar 120, And may be formed in a straight shape or a radial shape on the outer peripheral surface of the month bar 120. The auxiliary heat transfer part 130, which is in the form of a rod, may be formed at a predetermined angle with respect to the heat transfer rod 120, thereby adjusting the vaporization speed of the working fluid 10.

As shown in FIG. 7E, the auxiliary heat transfer part 130 may have a disc shape, and may be perpendicular to the heat transfer bar 120 to maximize a portion contacting the working fluid 10. At this time, the diameter of the auxiliary heat transfer part 130 is preferably smaller than the diameter of the body 100 so that the movement of the working fluid 10 is not disturbed, and a plurality of through holes are formed in the circular heat transfer part 130 It is possible.

As shown in FIGS. 8 and 9, the heat dissipation module using the hybrid heat dissipation pipe according to the present invention includes the heat dissipation pipe A described above and the outer peripheral surface of the pipe-shaped main body 200 in which the heat dissipation pipe A is inserted And a heat radiating member (B) having a radiating fin (210). The heat transfer efficiency from the substrate 20 to the working fluid 10 is improved by using the heat transfer pipe 120 including the heat transfer bar 120 and the auxiliary heat transfer portion 130, The radiating pipe A transmits heat to the radiating member B more quickly, so that the radiating efficiency is improved. In addition, heat can be easily transferred to the heat dissipating member (B) regardless of the direction of the heat dissipating pipe (A).

Meanwhile, the body 100 may be fitted so that its upper end protrudes from the upper end of the main body 200, as shown in FIG. At this time, the radiating fins 210 are spaced apart from the substrate 20 by a predetermined distance, so that convection for radiating heat is smoothly performed. In addition, since the substrate 20 and the radiating fins 210 Can be prevented.

The heat dissipation module using the hybrid heat dissipation pipe according to the present invention may further include a support plate 300 for coupling the heat dissipation pipe A to the substrate 20 and may be formed as a circular plate as shown in FIGS. But is not limited thereto. The supporting plate 300 is coupled to the rear surface of the substrate 20 on which the LED is mounted and has a hollow portion 310 to prevent the heat radiating pipe A from being inserted.

The heat dissipation pipe A can be directly coupled to the substrate 20 without using any adhesive or the like by the support plate 300 so that no substance is present between the heat dissipation pipe A and the substrate 20 do. Accordingly, the heat generated from the substrate 20 can not be properly transferred to the heat-radiating pipe A due to a material such as an adhesive, thereby preventing heat transfer efficiency from being reduced.

In addition, the support plate 300 is preferably formed of a material having a high thermal conductivity such as copper (Cu). 10, when the heat radiating pipe A is coupled to the substrate 20, the lid 110 is coupled with the substrate 20. When the area of the substrate 20 is larger than the area of the lid 110 The heat generated from the substrate 20 having a large area by coupling the support plate 300 having a high thermal conductivity to the substrate 20 and inserting the heat radiation pipe A into the support plate 300 is transmitted to the support plate 300 To the heat radiating pipe (A). As described above, the support plate 300 collects the heat generated from the substrate 20 and concentrates the heat to the heat radiation pipe A.

As shown in FIG. 9, the support plate 300 may include a plurality of support plates 300 according to the area of the substrate 20, and may be coupled to the substrate 20, as shown in FIG.

8 to 10, the support plate 300 may protrude along the hollow portion 310 to surround one end of the heat radiation pipe A. [ As described above, the support plate 300 collects the heat and concentrates the heat to the heat radiating pipe (A). Because the protruding part of the support plate (300) widens the contact area with the heat radiating pipe (A) To the pipe (A).

The protruding portion of the support plate 300 covers the one end of the heat-radiating pipe A and increases the area of the protrusion of the heat-radiating pipe A, The heat radiating pipe (A) is more firmly fixed to the substrate (20).

A: Heat dissipating pipe B: Heat dissipating member
10: working fluid 20: substrate
100: body 110: cover
120: heat transfer rod 130: auxiliary heat transfer part
200: main body 210:
300: support plate 310: hollow

Claims (10)

And a heat transfer bar 120 having a predetermined length and provided inside the cylindrical body 100 in which the beer working fluid 10 is accommodated and both ends thereof are opened and the lid 110 is coupled. Wherein one end of the heat sink pipe is integrally formed with a lid (110) coupled to one end of the body (100). The method according to claim 1,
Wherein the heat transfer bar (120) is provided with an auxiliary heat transfer part (130) along an outer circumferential surface thereof, and the auxiliary heat transfer part (130) is provided inside the body (100). 3. The method of claim 2,
Wherein the auxiliary heat transfer part (130) is formed at a lower end of the body (100). 3. The method of claim 2,
The auxiliary heat transfer part 130 is formed in a bar shape,
Wherein the plurality of auxiliary heat transfer parts (130) are radially formed along an outer peripheral surface of the heat transfer bar (120). 3. The method of claim 2,
The auxiliary heat transfer part 130 is formed in a disc shape,
Wherein the auxiliary heat transfer part (130) is formed to be perpendicular to the heat transfer rod (120). The method according to claim 1,
Wherein the heat transferring bar (120) is formed in a coil shape. A heat radiating pipe (A) formed according to any one of claims 1 to 6; And a heat dissipating member (B) having a heat dissipating fin (210) formed along an outer circumferential surface of a pipe-shaped body (200) in which the heat dissipating pipe (A) is inserted. 8. The method of claim 7,
Wherein the body (100) is fitted so that its upper end protrudes from the upper end of the main body (200). 9. The method according to any one of claims 7 to 8,
A hollow plate 310 to which the heat dissipation pipe A is inserted and a support plate 300 coupled to a rear surface of the substrate 20 on one side,
Wherein the heat dissipation pipe (A) includes a cover (110) to which the heat transfer bar (120) is coupled, and one end of the cover (110) is fitted to the hollow portion (310). 10. The method of claim 9,
Wherein the support plate (300) is protruded along the hollow part (310) so as to surround one end of the heat radiation pipe (A).
KR20130044551A 2013-04-23 2013-04-23 Hybrid radiationg pipe and Heatsink module KR20140126438A (en)

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KR20130044551A KR20140126438A (en) 2013-04-23 2013-04-23 Hybrid radiationg pipe and Heatsink module

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019112400A1 (en) * 2017-12-08 2019-06-13 주식회사 케이엠더블유 Heat radiating device for electronic element
KR20190068485A (en) * 2017-12-08 2019-06-18 주식회사 케이엠더블유 A cooling apparatus for electronic elements

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019112400A1 (en) * 2017-12-08 2019-06-13 주식회사 케이엠더블유 Heat radiating device for electronic element
KR20190068485A (en) * 2017-12-08 2019-06-18 주식회사 케이엠더블유 A cooling apparatus for electronic elements
US11266041B2 (en) 2017-12-08 2022-03-01 Kmw Inc. Cooling apparatus for electronic element

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